<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>

		<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
	</head>
	<body>
		<div id="app">
			<time-comp></time-comp>
		</div>

		<script>
			var img = document.createElement("img");
			img.setAttribute("src", "loading.gif")

			var app = Vue.createApp({
				data() {
					return {
						"message": "Hello Vue!"
					}
				}
			});
			app.component("time-comp", {
				data() {
					return {
						currentTime: '?'
					}
				},
				beforeCreate() {
					document.body.append(img)
				},
				created() {
					setTimeout(() => {
						document.body.remove(img);
						this.currentTime = new Date().toLocaleTimeString()
					}, 5000)
				},
				template: "<div>当前时间:{{currentTime}}</div>"
			})

			var vm = app.mount("#app")
		</script>



	</body>
</html>